# 2.4.1 Linear versus Non-linear Function

Linear Function (Straight Line)

Examples :
(a) = 3x + 5
(b) 3y + 2x – 7 = 0

Non-Linear Function

Examples :
(a) $y=a{x}^{3}+b{x}^{2}$

(b) $y=ax+\frac{b}{x}$

(c) $y=a{b}^{x}$

(d) $y=\frac{x}{p+qx}$